Basically, I have an XFX 5870 that is a little dodgy. The default idle clock speeds are too low 157 core, 300 memory meaning that when I attempt to mine, my whole system crashes and I get green artifacts all over the screen. In Windows, I can set a profile in the AMD Vision Centre (Rebranded CCC) to set the idle clocks higher so that the artifacts disappear and I don't crash.

The thing is that I want to mine in Ubuntu but I can't figure out how to change the idle clock speeds. Does anyone know how to do this? The option isn't there in CCC like it is in Windows. I also can't find the "Profiles" folder to edit the profile.

Transactions can optionally carry transaction fees. Whoever mines the block which ends up containing your transaction will get the fee. The Bitcoin client will sometimes force you to pay a fee when it thinks that no miner will accept your transaction otherwise.

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